Passakorn Phannachitta, Pijak Jirapiwong, Akinori Ihara, Masao Ohira, and Ken-ichi Matsumoto, An Analysis of Gradual Patch Application – A Better Explanation of Patch Acceptance, In Proceedings The Joint Conference of the 21th International Workshop on Software Measurement and the 6th International Conference on Software Process and Product Measurement (IWSM/MENSURA2011), pp.106-115, November, 2011.

Anakorn Jongyindee, Masao Ohira, Akinori Ihara, and Ken-ichi Matsumoto, Good Or Bad Committers? A Case Study of Committers’ Cautiousness and the Consequences on the Bug Fixing Process in the Eclipse Project, In Proceedings The Joint Conference of the 21th International Workshop on Software Measurement and the 6th International Conference on Software Process and Product Measurement (IWSM/MENSURA2011), pp.116-125, November, 2011. [Best Student Paper Award]

Anakorn Jongyindee, Masao Ohira, Akinori Ihara, and Ken-ichi Matsumoto, A Case Study of the Consequences from Committers’ Activities on the Bug Fixing Process in the Eclipse Project, In Proceedings The International Workshop on Empirical Software Engineering in Practice (IWESEP2011), pp.9-14, November, 2011.

Soichiro Tani, Akinori Ihara, Masao Ohira, Hidetake Uwano, and Ken-ichi Matsumoto, A System for Information Integration between Development Support Systems, In Proceedings The International Workshop on Empirical Software Engineering in Practice (IWESEP2011), November, 2011.

Chakkrit Tantithamthavorn, Papon Yongpisanpop, Masao Ohira, Arnon Rungsawang, and Ken-ichi Matsumoto, A Tool for Collaborative Guitar Chords Creation Based on the Concept of the Distributed Version Control, In Proceedings The International Workshop on Empirical Software Engineering in Practice (IWESEP2011), pp.43-44, November, 2011.

Yuji Takai, Masao Ohira, and Ken-ichi Matsumoto, Effects of A Synchronized Scoring Interface on Musical Quality, In Proceedings of the 14th International Conference on Human-Computer Interaction (HCII2011), Vol.6778, pp.363-372, July 2011.

Papon Yongpisanpop, Masao Ohira, and Ken-ichi Matsumoto, Community Search: A Collaborative Searching Web Application with A User Ranking System, In Proceedings of the 14th International Conference on Human-Computer Interaction (HCII2011), Vol.6778, pp.378-386, July 2011.

Hitoshi Masaki, Masao Ohira, and Ken-ichi Matsumoto, A Quantitative Evaluation on the Software Use Experience with Electroencephalogram, In Proceedings of the 14th International Conference on Human-Computer Interaction (HCII2011), Vol.6770, pp.469-477, July 2011.

Akinori Ihara, Masao Ohira, and Ken-ichi Matsumoto, Differences of Time between Modification and Re-Modification: An Analysis of A Bug Tracking System, Proceedings of The 3rd International Workshop on Knowledge Collaboration in Software Development (KCSD2009), Tokyo, Japan, pp.17-22, November 2009.

Masao Ohira, Kumiyo Nakakoji, and Ken-ichi Matsumoto, D-SNS: A Knowledge Exchange Mechanism Using Social Network Density among Mega-Community Users, In Proceedings of Supporting the Social Side of Large Scale Software Development (CSCW2006 Workshop), Banff, Alberta, Canada, pp.39-42, November 2006.

Takeshi Kakimoto, Yasutaka Kamei, Masao Ohira, and Ken-ichi Matsumoto, Social Network Analysis on Communications for Knowledge Collaboration in OSS Communities, In the 2nd International Workshop on Supporting Knowledge Collaboration in Software Development (KCSD2006), Tokyo, Japan, pp.35-41, September 2006.

Masao Ohira and Ken-ichi Matsumoto, Analysis on Diversity and Similarity among Software Development Projects Using Empirical Project Monitor, In Proceedings of International Workshop on Computer-Supported Knowledge Collaboration, pp.8-9, July 2004. (Shanghai, China)

Masao Ohira, Toward Computational Support for Collaborative Learning in Group Meetings,International Symposium on Social Creativity and Meta-Design, Aspen, Colorado, May, 2001

Award winning papers and presentations

Anakorn Jongyindee, Masao Ohira, Akinori Ihara, Ken-ichi Matsumoto, Good or Bad Committers? A Case Study of Committers’ Cautiousness and the Consequences on the Bug Fixing Process in the Eclipse Project, Proceedings of The Joint Conference of the 21th International Workshop on Software Measurement and the 6th International Conference on Software Process and Product Measurement (IWSM/MENSURA2011), pp.116-125, November, 2011. (Best Student Paper Award)